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Fire Management & Prescribed Burning Flashcards

7 cards from real SAF practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Fire Management & Prescribed Burning flashcards as text
  1. Which component of the fire environment triangle describes the arrangement, continuity, and moisture content of fuels?

    Answer: Fuel

    The fuel component of the fire environment triangle encompasses fuel type, arrangement, moisture content, and continuity, all of which directly influence fire behavior.

  2. The term 'fine fuels' in fire management typically refers to fuels with a time-lag of:

    Answer: 1 hour

    Fine fuels (1-hour time-lag fuels) are small-diameter materials (less than 0.25 inches) that respond quickly to changes in atmospheric moisture and ignite most readily.

  3. A prescribed burn conducted under specific pre-defined conditions to meet resource management objectives is best described as:

    Answer: Prescribed fire

    Prescribed fire is the deliberate application of fire under specified conditions within a defined area to achieve land management objectives, distinguished from unplanned wildfire.

  4. Which wind measurement is most critical when writing a prescribed burn prescription?

    Answer: 20-foot wind speed

    The 20-foot wind speed (measured 20 feet above the vegetation) is the standard reference used in fire behavior modeling and prescribed burn prescriptions because it represents the wind driving fire spread.

  5. The National Fire Danger Rating System (NFDRS) uses which index to estimate the energy release from burning fuels?

    Answer: Energy Release Component (ERC)

    The Energy Release Component (ERC) represents the potential heat release per unit area in the flaming front, reflecting the dryness of both live and dead fuels.

  6. Which type of prescribed burn is ignited at the downwind end of a unit and allowed to back slowly into the wind?

    Answer: Backing fire

    A backing fire burns against the wind, moving slowly upwind with lower flame lengths and intensity, making it safer and easier to control than a head fire.

  7. The Keetch-Byram Drought Index (KBDI) measures:

    Answer: Moisture deficit in deep duff and organic soils

    KBDI quantifies the soil and duff moisture deficit, ranging from 0 (saturation) to 800 (maximum drought), and is used to assess fire potential related to deep soil moisture conditions.